全文获取类型
收费全文 | 671篇 |
免费 | 45篇 |
国内免费 | 3篇 |
专业分类
耳鼻咽喉 | 7篇 |
儿科学 | 17篇 |
妇产科学 | 33篇 |
基础医学 | 85篇 |
口腔科学 | 36篇 |
临床医学 | 75篇 |
内科学 | 122篇 |
皮肤病学 | 9篇 |
神经病学 | 43篇 |
特种医学 | 13篇 |
外科学 | 51篇 |
综合类 | 11篇 |
预防医学 | 51篇 |
眼科学 | 59篇 |
药学 | 52篇 |
中国医学 | 18篇 |
肿瘤学 | 37篇 |
出版年
2024年 | 2篇 |
2023年 | 8篇 |
2022年 | 24篇 |
2021年 | 34篇 |
2020年 | 32篇 |
2019年 | 43篇 |
2018年 | 45篇 |
2017年 | 31篇 |
2016年 | 44篇 |
2015年 | 44篇 |
2014年 | 34篇 |
2013年 | 46篇 |
2012年 | 68篇 |
2011年 | 58篇 |
2010年 | 26篇 |
2009年 | 28篇 |
2008年 | 44篇 |
2007年 | 33篇 |
2006年 | 24篇 |
2005年 | 11篇 |
2004年 | 10篇 |
2003年 | 12篇 |
2002年 | 6篇 |
2001年 | 5篇 |
2000年 | 2篇 |
1999年 | 2篇 |
1993年 | 2篇 |
1965年 | 1篇 |
排序方式: 共有719条查询结果,搜索用时 0 毫秒
1.
2.
Najmabadi H Nishimura C Kahrizi K Riazalhosseini Y Malekpour M Daneshi A Farhadi M Mohseni M Mahdieh N Ebrahimi A Bazazzadegan N Naghavi A Avenarius M Arzhangi S Smith RJ 《American journal of medical genetics. Part A》2005,(2):132-137
Hereditary hearing loss (HHL) is a very common disorder. When inherited in an autosomal recessive manner, it typically presents as an isolated finding. Interestingly and unexpectedly, in spite of extreme heterogeneity, mutations in one gene, GJB2, are the most common cause of congenital severe-to-profound deafness in many different populations. In this study, we assessed the contributions made by GJB2 mutations and chromosome 13 g.1777179_2085947del (the deletion more commonly known as del (GJB6-D13S1830) that includes a portion of GJB6 and is hereafter called Delta(GJB6-D13S1830)) to the autosomal recessive non-syndromic deafness (ARNSD) genetic load in Iran. Probands from 664 different nuclear families were investigated. GJB2-related deafness was found in 111 families (16.7%). The carrier frequency of the 35delG mutation showed a geographic variation that is supported by studies in neighboring countries. Delta(GJB6-D13S1830) was not found. Our prevalence data for GJB2-related deafness reveal a geographic pattern that mirrors the south-to-north European gradient and supports a founder effect in southeastern Europe. 相似文献
3.
Petr Heny Maziar Ramezani Daniel Schewitz Andreas Hch Dustin Mbius Benjamin Ondruschka Niels Hammer 《Journal of anatomy》2022,241(4):928
The alteration in mechanical properties of posterior pelvis ligaments may cause a biased pelvis deformation which, in turn, may contribute to hip and spine instability and malfunction. Here, the effect of different mechanical properties of ligaments on lumbopelvic deformation is analyzed via the finite element method. First, the improved finite element model was validated using experimental data from previous studies and then used to calculate the sensitivity of lumbopelvic deformation to changes in ligament mechanical properties, load magnitude, and unilateral ligament resection. The deformation of the lumbopelvic complex relative to a given load was predominant in the medial plane. The effect of unilateral resection on deformation appeared to be counterintuitive, suggesting that ligaments have the ability to redistribute load and that they play an important role in the mechanics of the lumbopelvic complex. 相似文献
4.
This paper examines the electrochemical and microstructural features of SrCo0.8Fe0.1Ga0.1O3−δ (SCFG) with a fibrous structure infiltrated by an SDC electrolyte for use as a cathode in solid oxide fuel cells (SOFCs). An electrospinning process is used to produce SCFG fibers. In a symmetrical cell, Sm0.2Ce0.8O1.9 (SDC) nanoparticles are infiltrated into the porous fibrous SCFG cathode layer after it was applied to the SDC dense electrolyte. Electrochemical impedance spectroscopy (EIS) analysis reveals that the polarization resistance of the SCFG cathode with fiber morphology is significantly lower than that of the same combination with powder morphology. In addition, it is shown that infiltration of SDC oxygen ion conductor nanoparticles enhanced electrochemical performance. The lowest value of polarization resistance, 0.03 Ω cm2 at 800 °C, is attained by the SCFG with a fibrous structure containing 14 wt% SDC nanoparticles. 相似文献
5.
Myxoinflammatory fibroblastic sarcoma (MIFS) is an uncommon soft tissue sarcoma. We present two cases of MIFS: A known case of Hodgkin‘s lymphoma presented with hand mass; a recurrence of MIFS with a history of chronic lymphocytic leukemia. 相似文献
6.
7.
8.
9.
Simani Leila Ramezani Mahtab Darazam Ilad Alavi Sagharichi Mastooreh Aalipour Mohammad Amin Ghorbani Fatemeh Pakdaman Hossein 《Journal of neurovirology》2021,27(1):154-159
Journal of NeuroVirology - As the SARS-COV-2 becomes a global pandemic, many researchers have a concern about the long COVID-19 complications. Chronic fatigue syndrome/myalgic encephalomyelitis... 相似文献
10.
Mohammad Jalali Marzieh Mahmoodi Seyedeh Parisa Moosavian Ronak Jalali Gordon Ferns Abdolhamid Mosallanezhad Mohammad Hadi Imanieh Zahra Mosallanezhad 《Phytotherapy research : PTR》2020,34(8):1723-1733
The present systematic review and meta‐analysis was conducted to investigate the effects of ginger supplementation on markers of inflammatory and oxidative stress. PubMed, Embase, Scopus, and Web of Science were systematically searched to identify relevant clinical trials evaluating the effects of ginger on serum CRP (C‐reactive protein), TNF‐α (tumor necrosis factor‐alpha), IL‐6 (interleukin‐6), PGE2 (prostaglandin E2), TAC (total antioxidant capacity), and MDA (malondialdehyde) from inception up to September 2019. Mean difference and 95% confidence intervals were pooled using a random‐effects model. Potential publication bias was assessed using visual inspection of funnel plot and Egger's weighted regression tests. After excluding irrelevant records, 20 full‐text articles that included 25 separate studies were included to the meta‐analysis. Pooled results of this study indicated a statistically significant effect of ginger on serum CRP, TNF‐α, IL‐6, TAC, and MDA levels following ginger supplementation in compared to the controls. Also, the effects of ginger on serum PGE2 was marginally significant. Moreover, the high heterogeneity was disappeared in subgroup analysis performed by age, duration, dosage, and quality. This current analysis indicates that ginger supplementation has a significant effects on serum inflammatory and oxidative stress markers. 相似文献